The **M2TG-5D-R** is a specific model within the **M2 Series** of cylindrical toggle switches manufactured by **Nidec Components** (formerly Copal Electronics). These switches are designed for PC board mounting and are known for their high reliability and compact size. --- ### 1. Technical Specifications The part number can be broken down to understand its electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Series** | M2 (Cylindrical Toggle) | | **Terminal Type** | TG (Right-angle PC terminal) | | **Number of Poles** | 5 (Indicates a specific circuit configuration, likely 2-pole) | | **Switching Function** | D (ON - ON) | | **Contact Material** | R (Gold-plated contacts) | ### 2. Key Electronic Components & Features #### A. Contact Mechanism * **Twin-contact Design:** The M2 series utilizes a twin-contact mechanism. This provides high contact reliability, especially in low-level signal circuits, by ensuring that if one contact point fails due to dust or oxidation, the second point maintains the connection. * **Gold Plating:** The "R" suffix indicates gold-plated contacts. This is critical for preventing corrosion and ensuring low contact resistance over time, making it ideal for logic-level applications (low voltage/current). #### B. Electrical Ratings * **Maximum Rating:** Typically 0.4VA Max (28V DC max). * **Minimum Rating:** 1μA (20mV DC). * **Dielectric Strength:** 500V AC for 1 minute. * **Insulation Resistance:** 1,000MΩ minimum (at 500V DC). #### C. Mechanical Structure * **Washable Construction:** The switch is designed to be process-sealed. This means the electronic internals are protected during wave soldering and cleaning processes (water-based or solvent-based) by an O-ring and epoxy sealing. * **Terminal Layout:** The "TG" designation signifies a right-angle orientation, allowing the toggle to be operated from the side of a printed circuit board. --- ### 3. Application Use Cases Due to its electronic profile, the M2TG-5D-R is commonly found in: 1. **Industrial Controls:** Signal switching in PLC modules. 2. **Medical Equipment:** User interface toggles where high reliability is paramount. 3. **Communication Devices:** Setting hardware configurations or modes on PCBs. 4. **Audio/Video Gear:** Signal routing where low-noise contact is required.